How to start....

Setting out your expectations in text is a great way to focus chatGPT. Consider adding how you want to treat your chats. chatGPT will be vary garrulous when it faces an open ended statement from you. To solve that, at the beginning of any chat, you say:
"I do not want any analysis, review, nor editorialization.
You may ask questions (20 word limit) that seek clarity,
or to foster deeper inquiry."

This will set the pacing to a calm interchange, as in being interviewed which is by and large why you would want to use chatGPT.

If you are more interested in chatGPT taking dictation, which it does quite well, you could add:
"I will be making statements that are episodic in nature spanning many breaks in our chat. No questions until I call for them."